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COMM information

The COMM collection contains a wealth of interesting, mostly historical information.
If you have a question about our collection or a related matter, we are happy to help.
Because COMM is a non-subsidised institute, the following rates apply:

  • For questions, an initial rate of € 14.50 applies for the first 15 minutes, followed by a rate of € 60 per hour.
  • For publication rights and request forms, click here.

E-mail your question to When you can expect an answer depends on the complexity of the question, but we will try to respond within three weeks. 

Would you like to research our collection? E-mail your specific research question to the Collection team to make an appointment with one of our curators.
For research questions related to the Postal stationary collection (including stamps) and to the company archives of the PTT, please contact the National Archive: 

The library can only be visited on Thursdays. 

If you are looking to consult a rather large amount of information, we recommend that you make an appointment in advance. Our library staff will then be able to prepare any materials you would like to consult in advance and it will help us ensure that our library will not get too busy. 

To make an appointment or ask a question by e-mail, please contact us at:
(phone) books and magazines cannot be checked out and can only be consulted on the spot.
An hourly rate of € 60 applies to researching our collection by e-mail or on site. To visit the library, you must purchase a ticket for the museum. 

The COMM collection includes virtually all national phone books issued by PTT/KPN, all of which can be consulted on site. If you want to look up a phone number dating to the period between 1901-1950 yourself, you can use We have drawn up instructions to help you search COMM’s digitised phone books. 

View instructions 

Contact us
If you would like to know more about our collection, perform research or donate an object, please contact the COMM Collection team.